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🧪 Lab 9 of 21 · Science Lab - Advance 3 · Class 10

Experiment 8 — Balance the Equation

Topic: Chemistry · Class 10 · Chemical reactions and equations

Aim: Balance the equation Fe + H₂O → Fe₃O₄ + H₂ with the smallest whole numbers.

Daily: A balanced equation is how a chemist calculates how much raw material a factory needs and how much product it will get. Getting it wrong wastes tonnes of material.

Question: Why can you not balance an equation by changing H₂O into H₂O₂?

Exp: Only coefficients may be adjusted; the compounds are fixed.

Question: Fe + CuSO₄ → FeSO₄ + Cu is an example of…

Exp: A more reactive metal displaces a less reactive one.

Exp: It absorbs energy from sunlight.

Question: In a redox reaction, the substance that gains oxygen is…

Exp: The other one is reduced.

Question: The symbol (aq) means the substance is…

All activities in Science Lab - Advance 3

  1. What Next? Careers in Science
  2. Experiment 1 — Verify Ohm’s Law
  3. Experiment 2 — Series or Parallel?
  4. Experiment 3 — Choose the Right Fuse
  5. Experiment 4 — Make the Coil Spin
  6. Experiment 5 — Make Electricity from Movement
  7. Experiment 6 — Find the Image
  8. Experiment 7 — Correct the Vision
  9. Experiment 8 — Balance the Equation
  10. Experiment 9 — Read the pH
  11. Experiment 10 — Win the Metal from Its Ore
  12. Experiment 11 — Ionic or Covalent?
  13. Experiment 12 — Build a Carbon Compound
  14. Experiment 13 — Soap, Detergent and Hard Water
  15. Experiment 14 — Spot the Reaction Type
  16. Experiment 15 — Trace the Blood
  17. Experiment 16 — The Reflex Arc
  18. Experiment 17 — Which Way Will It Grow?
  19. Experiment 18 — From Pollen to Seed
  20. Experiment 19 — Mendel’s Peas
  21. Experiment 20 — Who Decides the Sex of the Child?

Practise for Class 10